题干

细胞是生物体结构和功能的基本单位。在下列关于细胞基本共性的描述中,正确的是
①均具有磷脂双分子层与蛋白质构成的膜结构
②ATP是所有细胞可直接利用的能源物质
③都具有核糖体作为蛋白质合成的“机器” 
④遗传信息均储存在脱氧核糖核酸分子中
⑤编码氨基酸的密码子基本相同

A:①②③

B:①④⑤

C:①②③⑤

D:①②③④⑤

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答案(点此获取答案解析)

D

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阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。注意:C篇分A、B两种题型,A(易)种题型为客观题,B(难)种题型为主观题。

    Henry Ford was born on a farm on July 30th, 1863. The farm was near the city of Detroit.

    Henry was always interested in machines. He enjoyed fixing clocks.And he helped repair farm equipment. When Henry was sixteen years old, he left the family farm and went to Detroit to learn more about machines. Henry used what he learned from work to develop engines. In 1903, he was ready to start building cars for the public. On July 15th, 1903, a man named Doctor Pfenning bought the first car from the Ford Motor Company.

    The sale to Doctor Pfenning was the beginning of a huge number of requests for Ford cars.By the end of March, 1904, almost 600 Ford cars had been sold. At the start of 1905, the Ford Motor Company was producing 25 cars each day.

    Henry Ford was sure the future of the automobile industry was in a low-priced car for the general public. He said then, and many times after,“I want to make a car that anybody can buy.”

    In 1907, Henry Ford said: "I will build a motor car for the great mass of people. 1t will be large enough for the family, but small enough for one person to operate and care for. It will be built of the best materials. It will be built by the best men to be employed. And it will be built with the simplest plans that modern engineering can produce. It will be so low in price that no man making good money will be unable to own one.”